Finding the Fourth Proportional to 2,335.68, 3,223.76 and 1,591.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.68 : 3,223.76 = 1,591.43 : x
2. Step 2: Convert to fraction form
   2,335.68/3,223.76 = 1,591.43/x
3. Step 3: Cross multiply
   2,335.68x = 3,223.76 × 1,591.43
4. Step 4: Simplify right side
   2,335.68x = 5,130,364.30
5. Step 5: Solve for x
   x = 5,130,364.30/2,335.68
6. Step 6: Final answer
   x = 2,196.52